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Finding the Fourth Proportional to 228,451.48, 315,263.46 and 126,484

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Solution

The fourth proportional to 228,451.48, 315,263.46 and 126,484 is: 174,548.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,451.48 : 315,263.46 = 126,484 : x
  2. Step 2: Convert to fraction form
    228,451.48/315,263.46 = 126,484/x
  3. Step 3: Cross multiply
    228,451.48x = 315,263.46 × 126,484
  4. Step 4: Simplify right side
    228,451.48x = 39,875,783,474.64
  5. Step 5: Solve for x
    x = 39,875,783,474.64/228,451.48
  6. Step 6: Final answer
    x = 174,548.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.